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  4. OS Engines O.S. Speed B21 Adam Drake Edition 4 3.49cc Nitro Engine with Muffler Set
OS Engines O.S. Speed B21 Adam Drake Edition 4 3.49cc Nitro Engine with Muffler Set
OS Engines O.S. Speed B21 Adam Drake Edition 4 3.49cc Nitro Engine with Muffler Set

OS Engines O.S. Speed B21 Adam Drake Edition 4 3.49cc Nitro Engine with Muffler Set

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Your Price: $589.99
Part Number: OSM1FH01
GTIN: 4531028027763
Brand: OS Engines
Availability: In Stock.
O.S. Engines would like to introduce new O.S.SPEED B21 ADAM DRAKE 4. The latest collaboration engine with world famous O.S. Team driver Adam Drake. Cylinder liner, crankshaft, outer head has been redesigned to Adam Drake’s spec for better balance, more torque and more power for better driving performance.
Features
  • Advice and testing was done by Roar Champion Adam Drake.
  • Newly designed cylinder liner uses 3 port design. Changing the exhaust dimension for more torque.
  • Changed crankshaft's inner diameter for better response in low to middle range.
  • New outer head has double anodized black and blue with new laser design and at same time lighter and better balance compared to the previous model.
  • Inner head's combustion chamber has been redesigned combustion efficiency has been improved, resulting in more torque.
  • Comes with f6II and f8 blue anodized reducers. 
Specifications
  • Bore: 0.646" (16 mm)
  • Displacement: 3.49 cc / 0.213cu.in.
  • Engine (Only) Weight: 12.42lbs (5634g)
  • Manufacturer #: 1FH01
  • RPM Range: 4,000 - 42,000 rpm
  • Stroke: 0.652" (16.55mm)

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